Hello Alberto and Group, I have some ideas for a 'Slow-CW-Viewer' (some of them have been implemented in Spectrum Lab, others in Spectran, others not at all...) How about this : - adjustable 'color b
Hello Geri, Rik, and others, Concerning the PSK31-signal generated from DF0WD: Oh yes, the signal must have been a little "broad" because the transverter which I used at DF0WD was a bit overdriven an
Hello Andy, Steward and others, I also think that modifying the PSK generator with a 'slow phase change' as suggested by Steward (KK7KA) is a very good idea so we don't need linear transmitters / tra
Hello Alan and others, Thanks for the information about the "new" modulation of CFH (or, to be precise, the absence of a modulation). Last weekend I was amazed by the strong carrier on 137.04, and sp
Hello Dave, hello group, Yes, it was indeed OM2TW on 136.8. I also tried to call him, but got no reply - maybe my 80mW (from DF0WD) too weak this evening, also some static around later. Blew a FET in
Just a final update on the 19kHz FM stereo pilot tone (compared to TV sync). If you are not interested in this subject, please stop reading here or click on the delay button of your Email browser. Or
Hello Mike and group, Firstly, the frequency stability - presumably of my IC-706 Mk1 - was not good enough for the 30s dot setting. After a long warm-up period, it settled down to a ragged line that
Hello Alberto, hello group, Concering the accuracy of the soundcard's crystal referency: There has been a discussion about this before, and I do not want to trigger that again. Here are the results f
Hello group, Just did a few tests (off-air) using a slow variant of PSK31 which could be called PSK10, PSK05 etc. Instead of the signaling rate of 31.25 symbols/second from G3PLX's original PSK31, I
Hello group, just turned the RX on to find that the FSK signal on the bottom of 136kHz has gone. Just in case anyone 'across the pond' wonders. Concerning splitting the reflector: A good point, Alan
Concerning Andre's and (YMC-) Dave's proposal to split the reflector: That's exactly what I have been thinking about (but never dared to suggest It has been stated a few weeks ago what the original i
Hello group, I'd like to learn a bit more about the Luxemburg effect on LF. There have been a few mails to the reflector mentioning this effect some months ago, and some stations told me I got lost i
Hello Rik, hello group, Consider this for 'audio keying' a transmitter to generate CW (morse code with ON/OFF keying) or DFCW (morse code using AFSK): As long as you keep the audio frequency higher t
Hi Alberto, Jim, and LF group, As Jim already wrote, the amplitude measuring facility of Spectrum Lab uses a more or less arbitrarily chosen scale which is 0 dB for the lowest possible signal which c
Hello group, I just thought about an audio frequency reference for all who don't have an accurate audio reference but a longwave receiver (like myself..) In one of his recent postings Jim 'BMU explai
Well, the DCF77 decoder was a nice experiment, but not too much more than that. The problem is, PC clocks (though called 'Real Time Clocks') can be quite bad, much worse than the cheapest wristwatch
Hi Andy, Rik, and others, A kind of "microtimer" is still there, no matter if you write your programs in Delphi, C++Builder or any of Microstuff's Visual something. The routine is called "QueryPerfor
Hello group, there was nice signal from Jim M0BMU in the new promising WOLF BPSK mode on saturday evening (just got home from the club station with 30 megabytes of recorded audio..) I had 100% error
Hello Jim and others, I also like to do some RX-Tests with WOLF, because that seems to be a very interesting mode (not only because of its nice name hi). Because I always have to drive up to the club
Hello Mike, Rik and the group, Concerning an 'adjustable spacing grid' to improve DFCW reception: The recent versions of Spectrum Lab had a 'time scale' for the waterfall, wich can be set to any inte
